5KG Pack
    • 5KG Pack
    • 15KG Pack
    • 401 Epoxy Floor Primer

    401 Epoxy Floor Primer


    401 Epoxy Floor Primer is a two pack, water dispersible epoxy based primer/sealer/clear coating, especially formulated to meet the technological and ecological requirements of modern building and industrial practice. Ideal for use as a clear sealer on concrete and masonry surfaces.

    • Also available in 4,000+ colours from RAL, BS, NCS
    • Excellent adhesion to dry or damp surfaces
    • Low odour
    • Easily applied
    • Taint free
    • Available in Smooth and Anti-Slip* options
    • Very good chemical and abrasion resistance
    • Economical and versatile
    • Recommended application temperature 10°C - 30°C
    • Images are for illustrative purposes only and may differ from the actual product
    • This product is for Professional Use Only

    £70.00(ex. VAT)
    £84.00 (inc. VAT)
    Please choose your colour
    Available for Delivery (See Delivery Options Below)


    401 Epoxy Floor Primer is a two pack, water dispersible epoxy based primer/sealer/clear coating, especially formulated to meet the technological and ecological requirements of modern building and industrial practice.

    401 Epoxy Floor Primer can act as a curing membrane to increase hardness of concrete by allowing full hydration of cement and can be applied to new concrete, 7 days after being poured. 401 Epoxy Floor Primer in this circumstance must be left as a standalone sealer or overcoated with 303 Epoxy Floor Paint only.

    401 Epoxy Floor Primer is non-flammable and solvent free, is low odour, and may be applied to dry or damp surfaces. 401 Epoxy Floor Primer has excellent adhesion to most building materials, is nontoxic once cured, and consequently is a highly versatile material lending itself to application in many different types of location and circumstances.

    For lower temperatures (5°C - 30°C) or when a faster overcoating times are required a Winter Grade version of this product is available - Click Here for the Technical Data Sheet.

    This product is for Professional Use Only.

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    Features & Benefits

    • Two-pack
    • Solvent free
    • Non-flammable
    • Low Odour
    • May be applied to dry or damp surfaces
    • Excellent adhesion to most building materials
    • Nontoxic once cured
    • Recommended application temperature 5°C - 25°C

    Typical Properties

    Technical Data
     401 Epoxy Floor Primer
    Pot life @ 20°C:90 Minutes
    Adhesion to dry concrete:4.4MPa (concrete failure)
    Adhesion to damp concrete: 4.1MPa (concrete failure)

    Chemical Resistance
    Dilute AcidsExcellent
    Dilute AlkalisExcellent
    White SpiritExcellent

    Please consult our Technical Department on 0113 2455450 (option 2) or send a message to [email protected] for specific advice.

    Slip Resistance

    Should a non-slip finish be required, 508 Fine Particle Anti-Slip Additive can be added to the coating during mixing prior to application to produce an even and easily cleanable texture to the dried surface.

    Alternatively the 'Anti Slip' option can be selected when purchasing the product and the 250 micron grade of 508 Anti-Slip Additive will be added at 2.4% prior to receipt.

    Results based on adding 508 Fine Particle Anti-Slip Additive (250 Micron Grade) @ 2.4%.

    • 5kg unit - add 200g
    • 15kg unit - add 600g
    • Dry PTV: 50-52
    • Wet PTV: 40-42

    PTV Ratings:

    Slip potential classifications from Pendulum Test Values.

    Slip Resistance Values
    PTVSlip Potential
    < 25High
    25 - 35Moderate
    > 35Low

    The above results must only be used as a general guideline as the slip resistance of a cured resin coating can vary considerably due to many factors including: application technique, variations in film thickness, dispersion of the anti-slip texturing additive and the surface variations of the substrate and location to where it will be applied.

    To obtain accurate PTV readings that are site specific (if required) it is strongly recommended that a slip assessment pendulum test is undertaken on each specific site after completion of the installation when the resin has fully cured.

    A full copy of the official test report is available upon request.


    • A 5kg pack is sufficient to prime 25m² of surface (15kg pack pro rata)

    Surface Preparation

    • Surfaces should be sound, clean and free from standing water, laitance, oil, grease, and other contaminants
    • New concrete should be allowed to cure for a minimum of 21 days
    • Floors should be mechanically abraded, scarified, grit blasted or acid etched where any subsequent coating is to be applied over the 401 Epoxy Floor Primer

    Note: For steel work a coat of 404 Epoxy Metal Primer is recommended as a primer instead of 401 Epoxy Floor Primer.

    Note: Substrates with high moisture content or oil contamination can still be coated in most instances by the inclusion of one of our specialist primers. Please see 402 Damp Proof Coating and 403 Oil Tolerant Primer for full details.


    • 401 Epoxy Floor Primer is supplied in pre-weighed containers ready for mixing
    • Pour the contents of the base container into the curing agent container and thoroughly mix, preferably by mechanical means until a uniform consistency is achieved
    • A low speed drill with paddle attachment is recommended for mixing operations

    Mixing Ratio:

    • By Volume = 1 Base : 3.09 Curing Agent
    • By Weight = 35.1 Base : 100 Curing Agent

    Note: Thinning of the material is not usually necessary. However, it is permissible to thin 401 Epoxy Floor Primer by the addition of up to 20% by volume of clear water. This will reduce the viscosity and facilitate application.


    • Apply by brush, roller or airless spray at a nominal rate of 5m² per kg
    • As a sealer or clear coating, a second coat should be applied after a minimum of 16 hours, and before a maximum of 48 hours
    • As a primer, overcoating may be commenced as soon as the initial milky appearance has cleared, typically after 2-4 hours
    • Ensure good ventilation during application


    • Clean equipment with 109 Tool Cleaner or a blend of 109 Tool Cleaner and water, immediately after use


    • 401 Epoxy Floor Primer will be touch dry following 6 hours cure @20°C, and hard dry after 16 hours cure @ 20°C
    • Full chemical resistance will be attained following 7 days cure @ 20°C
    • Good ventilation is essential to allow satisfactory evaporation of water from the film


    • Do not apply to uncured surfaces
    • Do not apply to surfaces previously treated with water repellent chemicals
    • Do not apply at temperatures below 3°C, or if there is a risk of frost during the initial curing period
    • Do not use 401 Epoxy Floor Primer that has exceeded the stated pot life
    • Protect from water splashes during the first 24 hours of cure, as the fresh film is sensitive to water
    • Relative humidity must be below 85% during the early stages of curing
    • Do not apply in badly ventilated areas

    Storage & Shelf Life

    • Store in dry conditions, out of direct sunlight, at temperatures between 10°C and 25°C
    • 401 Epoxy Floor Primer has a minimum shelf life of 12 months when stored in original, unopened containers in accordance with manufacturer’s instructions

    Health & Safety

    • Avoid contact of the material with skin and eyes
    • Wear gloves and goggles
    • Wash off splashes immediately with soap and water
    • Any eye contamination must be rapidly irrigated with copious amounts of clean water, and immediate medical attention sought
    • Please refer to Material Safety Data Sheet for additional information
    • 401 Epoxy Floor Primer shall be applied strictly in accordance with the manufacturer’s instructions

    For specific advice regarding any aspect of this product, please consult our Technical Department on 0113 2455450 (option 2) or send a message to [email protected]

    Product Details

    Data sheet

    For Use By
    Industrial Use
    Interior / Exterior Use
    Interior & Exterior
    For Use On
    Masonry Surfaces, Concrete
    Application Method
    Brush, Roller, Airless Spray
    VOC Levels
    Ultra-Low (5-49 g/l)
    Single, Two or Three Pack
    Pack Size
    5KG, 15KG
    Mixing Ratio
    By Volume - 1 Base : 3.09 Curing Agent
    Touch Dry (at 20°C)
    6 hours
    Fully Cured (at 20°C)
    7 Days
    Pot Life (at 20°C)
    5m² per KG
    Max. Application Temperature
    Min. Application Temperature
    Min. Application Temperature
    Touch Dry
    6 Hours
    UN Number (Base)
    Resistance to chemicals
    water, dilute acids, dilute alkalis, petrol, diesel, white spirit, skydrol
    Base Type
    Base Type
    Suitable For Use On
    Suitable For Use On
    Application Method
    Application Method
    Application Method
    Product Type
    Product Category
    Colour Family

    Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

    questions tony young on 2020-03-25 17:08:02

    Is your primer suitable for applying to self-levelling compound prior to painting? I have used Mapei 1210 compound. I would like to either paint the floor or simply seal it to stop staining. Thanks

    Answer from Rawlins’ Technical Team: 

    You would need to speak to Mapei's Technical Department regarding this, you will need to check whether they are happy for this levelling compound to be left as a wearing course and coated with a water based epoxy. If the answer to both is yes, then after suitable preparation our 401 Epoxy Floor Primer could be applied.

    Question about the product

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    401 Epoxy Floor Primer is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.

    Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.

    Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.

    All delivery costs below are excluding VAT